MFJ-616 Speech Intelligibility Enhancer, With Power Supply

This is a really clean, nice conditrion speech enhancer.  Mr. Martin Jue, owner of MJF, designed this for his own use when he began to notice some hearing loss, making it hard to understand radio QSOs.  This brought back the lost frequencies and allowed him to balance the sound left/right, and it workd so well he turned it into a product that would solve a lot mof hearing problems for other hams.

Power supply (wall unit) is included with this.

Here is how the manual (available for free download at MFJEnterprises.Com) describes this enhancer:

The MFJ-616 Speech Intelligibility EnhancerTM is a powerful communication tool that surrounds your operating position with crystal-clear electronically-enhanced audio. It also puts the fun back into ham radio!

Here are some of the high-tech features we think you'll enjoy:

Studio Quality: The Speech Intelligibility EnhancerTM is designed to drive two identical high quality speakers installed three or more feet apart. This configuration improves intelligibility, enhances frequency response, and dramatically increases spatial presence. Once your system is set up, you'll think you're in a broadcast studio!

Speech Intelligibility EnhancerTM: Every radio has different audio characteristics--and
everyone's hearing response changes over time. Our exclusive Speech Intelligibility EnhancerTM tailors the sound of your radio especially for your ears. Young or old, you'll hear more clearly than ever before!

Dual Amplifiers: Two powerful monolithic IC amplifiers deliver deep, rich, undistorted audio to high quality, hi-fidelity speakers (not supplied).

Adjustable Balance: A front-panel Balance control aligns speakers for dead-center positioning regardless of speaker placement or differences in ear sensitivity.

Easy-to-Operate: Large knobs, easy-to-access switches, and a wide-open panel layout make the MFJ-616 very easy to set up and use.

Dual Input: Switch between radios with the push of a button--no messing with patch cables behind the desk.

By-Pass Function: Switch Speech Intelligibility EnhancerTM in or out without cutting off the speakers. This feature is especially helpful for sound comparisons during the frequency set-up.

Multiple Outputs: Choose individual 3.5mm monaural jacks or a stereo jack wired for
computer-style speakers. Also, a front panel switch turns off your speakers, the stereo headset stays active. Front panel phone jack is attenuated to headset levels (deactivated with internal jumpers).

Multiple Power Sources: Use transceiver's 13.8-volt supply, wall adapter, dedicated supply, or 12-volt battery to power your unit.

Ships safely and quickly from Mississsippi.